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Ian G. Stimpson
@hypocentre.bsky.social
Seismologist, geophysicist, structural geologist, geoconservationist, not necessarily in that order.
304 followers298 following82 posts
Reposted by Ian G. Stimpson
DJjudithgeology.bsky.social

🧪⚒️ In a recent paper in Nature Communications, Dr. Társilo Girona and Dr. Kyriaki Drymoni claim that their machine learning algorithm can predict upcoming large earthquakes. We tested the method, and found that it does not work. Read more on our blog.

Does this machine learning model predict large earthquakes? Maybe not.
Does this machine learning model predict large earthquakes? Maybe not.

We examine a new earthquake paper in Nature Communications.

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IGhypocentre.bsky.social

The first EPOS TCS AH webinar of Season 2 is next Monday (2024-09-30 16:00 CET). Come listen to Glenda and me discuss a couple of use cases in outreach and teaching related to induced seismicity using data from the EPOS EPISODES Platform. Sign-up below. ⚒️🧪

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IGhypocentre.bsky.social

Interested in open use case datasets of mining, hydrocarbon extraction, geothermal, water reservoir induced earthquakes (catalogues, waveforms, production data) and the software tools to visualise and analyse them? EPOS TCS AH is now on Bluesky. ⚒️🧪

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IGhypocentre.bsky.social

Archive photo for #FoldFriday. The Lady Cave Anticline, Saundersfoot, Pembrokeshire, South Wales. Northward verging chevron profile anticline in Upper Carboniferous Lower Coal Measures sandstone. ⚒️🧪

Ash-grey, weathering orange, sandstone anticline rising out of a sandy beach with wooded cliffs behind. Right limb is dipping ~80 degrees north, left south limb dipping ~45 degrees. Fold core forms a cobble-filled cave.
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Reposted by Ian G. Stimpson
PDdentonseismo.bsky.social

exciting news for seismologists everywhere. My greatest ever achievement, a functioning geophone made from Lego, is now available to purchase from mindsetsonline.co.uk , also available a usb 24bit digitiser.

a geophone made from Lego
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IGhypocentre.bsky.social

Reasonable (for me) haul from the allotment before the thunderstorm started.

Selection of vegetable produce from the allotment. Swiss chard, marrow, shallots, garlic, courgettes, beetroot, runner beans, peppers, parsnips and tomatoes.
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IGhypocentre.bsky.social

Archive photo for #FoldFriday. Anticline-syncline pair in the Lower Carboniferous Ecton Limestone, Apes Tor, Ecton, Staffordshire, close to the historic Ecton Copper Mine. These are part of a north-south trending fold system in the Staffordshire Peak District formed during the Variscan Orogeny.

Dark grey folded rocks in a now mostly grassed over quarry. The antlicine-syncline pair have interlimb angles of about 90 degrees.
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IGhypocentre.bsky.social

There is fossilised tree material at Broadhaven but I am pretty certain that what you have here are nodules of siderite (iron carbonate).

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IGhypocentre.bsky.social

Archive photo for #FoldFriday. Slump folds, Lissan Formation, Masada National Park, Israel. The Lissan Fm. comprises lake varves, with summer, white, gypsiferous layers interbedded with more grey, winter, siltier ones. Slumps are triggered by seismic activity along the Dead Sea Transform. ⚒️🧪

Alternating white, gypsiferous (summer) and light grey, siltier (winter) varved sediments. Lower part and extreme top of image shows mostly parallel undisturbed varves. Upper half of image shows a series of tight folds with a strong vergence to the left.
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IGhypocentre.bsky.social

P-wave from yesterday’s (22:39:07 UTC 2024/09/07) M6.0 Tonga Islands earthquake recorded on my Raspberry Shake seismometer in Newcastle-under-Lyme, England ⚒️🧪

Earthquake diagrams. 
Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 

22:39:07 UTC 2024/09/07 M6.0 Tonga Islands
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Ian G. Stimpson
@hypocentre.bsky.social
Seismologist, geophysicist, structural geologist, geoconservationist, not necessarily in that order.
304 followers298 following82 posts